How to Remove Sticky Caulk

All caulk must be replaced at some point. In fact, it is recommended that bathtub and shower caulk be replaced once a year. Because caulk is placed in wet or moist areas, it can start to mold and peel away from the edge. Removing old caulk and replacing it with new, clean caulk will not only make your bathtub or shower look great again, it will also give your home added protection from dangerous water and moisture leakage.

Things You'll Need

• Caulk-stripping agent
• Caulk-cutting tool or razor blade
• Screwdriver or other thin-pointed tool
• Abrasive pad
• Mineral spirits
• Bleach
• Water
• Gloves

Instructions

1. Spread the caulk-stripping agent over the entire surface of the caulk to be removed, being careful to avoid the surrounding areas.

2. Soften the caulk by letting the caulk-stripping agent sit on the caulk for the length of time recommended on the package. Follow all directions on the specific caulk-stripper you have purchased carefully.

3. Slice the caulk vertically at each corner using a caulk cutting tool or razor blade.

4. Pull the caulk out of the edge in long strips by grabbing each end where you made the cut and yanking slowly and forcefully. Drive a screwdriver or other thin, pointed tool under stubborn caulk and pull it out of the edge.

5. Scrape any remaining caulk off of the surface and out of the edge using a caulk removal tool, razor blade or other sharp object. Move the blade in one direction, instead of scraping back and forth, and periodically spray the surface with water to prevent nicks and scratches.

6. Reapply the caulk-stripping agent if a lot of caulk remains. Purchase a stronger caulk remover from your local home improvement store and repeat steps 1 and 2 if necessary.

7. Scrub the area with an abrasive pad that has been soaked in mineral spirits once all of the caulk has been removed to remove any remaining caulk or caulk residue.

8. Wipe the area with a rag that has been soaked in a mixture of 1 part bleach to 5 parts water to remove any soap scum and kill any mildew.

9. Rinse the area and let it dry thoroughly, at least overnight. Make certain the area is well ventilated -- use a fan if necessary. New caulk will not adhere to even slightly wet surfaces.

Tips & Warnings

• Don't damage the surface tile or other materials when using the razor blade. Work slowly and carefully.

• Always wear gloves throughout the process to protect your hands the razor blades and chemicals.

• Make certain the area is properly ventilated, particularly when using chemicals and bleach.

References

• How to Caulk or Recaulk a Bathtub or Shower Enclosure
• Caulking a Bathtub or Shower Stall